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以海滩沉积地貌现场观测资料为基础 ,通过海滩剖面形态组合 ,历史地形资料比较和特征地貌形态变化理论计算分析 ,对汕头南部企望湾弧形砂质海岸切线段的海滩剖面冲淤幅度进行了估算。结果表明 ,该海滩剖面冲淤幅度具有区段变化 ,低潮阶地和槽谷部位约 1 .5～ 2 .0m,滩肩和水下沙坝部位可达 3 .0 m。近 3 0年来 ,海滩剖面总体上趋于微冲刷 ,平均冲刷强度约为 1～ 2 cm/a,可能与近期人工挖砂有关。
Based on the observed data of the beach sedimentary landscape, the ebb and flow margin of the beach profile at the tangential segment of the Bentley Bay of Shantou in the southern part of Shantou was estimated by the combination of the beach profile, the comparison of the historical topographic data and the theoretical analysis of the feature morphological changes. . The results show that the range of scouring and silting in the section of the beach varies from section to section, about 1.5 ~ 2.0m in the low tide terraces and troughs, and up to 3.0m on the beach shoulder and underwater barrage. In the recent 30 years, the beach profile generally tends to be micro-scour with an average erosion intensity of about 1 ~ 2 cm / a, which may be related to the recent manual sand excavation.